40149766 has 16 divisors (see below), whose sum is σ = 62980704. Its totient is φ = 19160064.

The previous prime is 40149763. The next prime is 40149799. The reversal of 40149766 is 66794104.

It is a super-2 number, since 2×40149766² = 3224007419709512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40149761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34246 + ... + 35398.

It is an arithmetic number, because the mean of its divisors is an integer number (3936294).

Almost surely, 2^40149766 is an apocalyptic number.

40149766 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40149766 is a deficient number, since it is larger than the sum of its proper divisors (22830938).

40149766 is a wasteful number, since it uses less digits than its factorization.

40149766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 40149766 is about 6336.3843002141. The cubic root of 40149766 is about 342.4214848351.

The spelling of 40149766 in words is "forty million, one hundred forty-nine thousand, seven hundred sixty-six".